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use std::os::raw::{c_int, c_void};
use std::sync::{Arc, Mutex};
use std::{fmt, mem, ptr};
use error::Result;
use ffi;
use lua::Lua;
use value::MultiValue;
pub type Integer = ffi::lua_Integer;
pub type Number = ffi::lua_Number;
#[derive(Debug, Copy, Clone, Eq, PartialEq)]
pub struct LightUserData(pub *mut c_void);
pub(crate) type Callback<'lua, 'a> =
Box<Fn(&'lua Lua, MultiValue<'lua>) -> Result<MultiValue<'lua>> + 'a>;
pub struct RegistryKey {
pub(crate) registry_id: c_int,
pub(crate) unref_list: Arc<Mutex<Option<Vec<c_int>>>>,
}
impl fmt::Debug for RegistryKey {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "RegistryKey({})", self.registry_id)
}
}
impl Drop for RegistryKey {
fn drop(&mut self) {
if let Some(list) = self.unref_list.lock().unwrap().as_mut() {
list.push(self.registry_id);
}
}
}
impl RegistryKey {
pub(crate) fn take(self) -> c_int {
let registry_id = self.registry_id;
unsafe {
ptr::read(&self.unref_list);
mem::forget(self);
}
registry_id
}
}
pub(crate) struct LuaRef<'lua> {
pub(crate) lua: &'lua Lua,
pub(crate) index: c_int,
}
impl<'lua> fmt::Debug for LuaRef<'lua> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "Ref({})", self.index)
}
}
impl<'lua> Clone for LuaRef<'lua> {
fn clone(&self) -> Self {
self.lua.clone_ref(self)
}
}
impl<'lua> Drop for LuaRef<'lua> {
fn drop(&mut self) {
self.lua.drop_ref(self)
}
}